Genetic Code – One language, diverse forms

The three-letter words of the genetic code are the same in every creature. CGA means arginine and GCG means alanine – in bats, in beetles, in beech trees, in bacteria. They even mean the same in the misleadingly named archaebacteria living at boiling temperatures in sulphurous springs thousands of feet beneath the surface of the Atlantic ocean or in those microscopic capsules of deviousness called viruses. Wherever you go in the world, whatever animal, plant, bug or blob you look at, if its alive, it will use the same dictionary and know the same code. All life is one.

– Matt Ridley, Genome

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